Furnace



, (No Model.)

y o. H. WILSON.

FURNAGE..

VNo. 289,591. Paten; Dec. 4, 1.883.

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Y UNITED STATES CHARLESHENREY VILSON, OF PADUCAH, KENTUCKY.

PATENT OEEICE.\

FURNACE.

SPECIFICATION forming part of Letters Patent No. 289,591, 'dated December 4, 1883.

Application iled September 13, 1883. (No model.) i

furnaces designed to be used for heating steamy boilers or for similar purposes, the object bef ing to provide a furnace of cheap and simple construction, wherein the smoke and gases of combustion are utilized and a fuel effected.

A further object of the invention is to provide devices for admitting cold air into the furnace when it is necessary to stop the gen# eration of steam without the liability of eXplosion incident to furnaces not provided with my improvements.

A further object of the invention is to provide a device for arresting sparks and ashes and carrying them to a pit therefor on the outside of the furnace. Y

A further object of the invention is to provide a furnace in which waste material-suoli as coal-dust, sawdust, tan-bark, &c.-may be utilized as fuel and be freely burned.

The invention consists in the improved construction and combinations of parts hereinafler fully described, and pointed out in the claims.

In the drawings, Figure l is a longitudinal vertical section of a furnace constructed in accordance with my invention. Fig. 2 is a vertical transverse section on the line` x x of Fig. l, and Fig. 3 is a similar view on the line y y of Fig. l. Y

A represents a furnace constructed of rebrick or of any other suitable material which will withstand a high degree of heat, and havmg its rear wall recessed or cut away. The furnace is provided with a boiler, B, mounted at one end in the front wall of the furnace A, which is cut away sufficiently to receive it, and supportedat the other end by means of a standard, a.

C represents the front wall of the furnace, which is provided with doors b, for the introduction of fuel into the fuel-chamber C', and with doors b', leading to the ash-pit 123.

great saving of D represents the grate, which maybe of any f end bears or rests in a grooved guideway, c,

formed in ythe side of a shelf or fire-bed, D. This nre-bed Dis formed of 'fire-brick, the

- walls of said fire-bed being of considerable thickness and of high resistance, and' is beveled at its front end, c', to allow an increased nre-space, and is rounded at its other side, as shown.

E represents a valve or damper provided with trunnions e2 e3, and arranged just in rear of the shelf or fire-bed ZD', and supported at one end in a block or standard, d, and having bearing at its other end in the side wall of the furnace, and is situated directly over .one of the ash-pits, d', of the furnace. The trunnions c2 extend through the side of the furnace, and may be provided with any suitable device for the rotation of the said damper. This damper has three functions, the first of which is to arrest the sparks and ashes whichare carried by the draft from the fire. This damper, when about one-third opened, will catch most of the sparks and ashes and cause them to drop into the ash-pit d', which is provided with an inclined way, di, an air-tight slide-door being arranged in the side of the wall at the end of this inclined way, and upon said door being raised the sparks, dust, and ashes will fall into a pit on theoutside of the furnace. The second function of this damper is, that it controls the heat to a great extent,and when operations are suspended at night the damper is tightly closed, all cold air is excluded, and the furnace retains more or less of the heat, as no cold air is admitted. The third function of the damper is, shouldl the engine in connection with which the furnace is used suddenly be stopped by accident or otherwise, the damper E may be slightly opened and the air-tight slide-doors on the side of the furnace partly raised and the cold air fed into the furnace, it becoming warm, however, before reaching the boiler, and'nok damage will result therefrom, and will not to any great degree check the head of steam.

The inclined way fr, which is situated directly underneath the valve or damper E, has bearing in the block or support d at one end,

and irl the side wall of the furnace at the other end/ An air-tight door is arranged at the side W the furnace, and upon its being raised any dust, ashes, or cinders that have fallen onto said inclined way will slide therefrom through the said door and into an ashpit outside of the furnace.

F represents an equalizer extending the entire width of the furnace and forming the rear wall of the ashpit d. Said equalizer F is formed with numerous perforations, e, in order to spread the flameheat and distribute it equally to all the parts of the rear of the boiler, (where it is most needed.) These perforations communicate with the combustion-chamber G, which is formed by the rear and side walls of the furnace and the equalizer F.

H represents a second ash-pit, formed by the equalizer F and the back wall of the furnace. rIhis ash-pit is similarly provided with an inclined way, h, which communicates with a pit on the outside of the furnace by means of an air-tight slide-door. When cleaning out the flues of the boiler the ashes, dust, and soot strike upon the inclined way h, and upon the slide-door being raised are carried to the outside of the furnace.

Having fully described the details of my improved furnace, I will proceed to describe its operations.

The fuel to be used, which, with my improved furnace, may be wet tan-bark, coaldust, sawdust, or, if desired, coal itself', is introduced into the fuel-chamber C through the door b and ignited. The name-heat will pass under the boiler and over the shelf or fire-bed, through the perforations ofthe equalizer, into the combustion chamber. The equalizer F arrests the direct current of the flame and any cinders contained therein, and causes the cinders to drop onto the inclined way, from whence they are carried to the outside of the furnace. It also distributes the flame and heat equally to all' points on the rear of the boiler.

It will be apparent from the above that with the furnace and the heat applied to the boiler as described the heat is equally spread upon all of the surface ofthe boiler exposed. There-l fore the contraction and expansion (if there be any) would be equalized.

It will also be obvious that the 'improvements above described are applicable to steamboats, heating-furnaces, and, in fact, to all furnaces used for generating steam.

Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, ,is-

1. In a furnace, the combination, with the fuel-chamber and fire-bed, of the valve vor damper E, which catches the sparks and ashes, and an inclined wayA arranged underneath said valve, upon which the ashes are carried to an ash-pit on the outer side of the furnace, substantially as set forth.

2. In a furnace, the combination, with the fuel-chamber C and fire-bed D, of a valve, E, inclined way d2, equalizer F, supportingstandard a, and an inclined way, I-I, arranged in rear of said equalizer, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

CHARLES HENREY VILSON.

Vi tn esses:

.Tiri/ins E. WiLLis. .ToNAi'i HARRIS, Jr. 

